//
// DotNetNuke - http://www.dotnetnuke.com
// Copyright (c) 2002-2010
// by Perpetual Motion Interactive Systems Inc. ( http://www.perpetualmotion.ca )
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions 
// of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
//

using System.Collections;
using System.IO;
using System.Xml;
using System.Xml.Schema;
namespace DotNetNuke.Common
{
	public class XmlValidatorBase
	{
		ArrayList _errs;
		XmlTextReader _reader;
		XmlSchemaSet _schemaSet;
		public ArrayList Errors {
			get { return _errs; }
			set { _errs= value; }
		}

		public XmlValidatorBase()
		{
			_errs = new ArrayList();
			_schemaSet = new XmlSchemaSet();
		}
		public XmlSchemaSet SchemaSet {
			get { return _schemaSet; }
		}
		protected void ValidationCallBack(object sender, ValidationEventArgs args)
		{
			_errs.Add(args.Message);
		}
		public bool IsValid()
		{
			XmlReaderSettings settings = new XmlReaderSettings();
			settings.Schemas = _schemaSet;
			settings.ValidationType = ValidationType.Schema;
			settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);
			XmlReader vreader = XmlReader.Create(_reader, settings);
			while (vreader.Read()) {
			}
			vreader.Close();
			return (_errs.Count == 0);
		}
		public virtual bool Validate(Stream xmlStream)
		{
			xmlStream.Seek(0, SeekOrigin.Begin);
			_reader = new XmlTextReader(xmlStream);
			return IsValid();
		}
		public virtual bool Validate(string filename)
		{
			_reader = new XmlTextReader(filename);
			return IsValid();
		}
	}
}
